WO2007141872A1

WO2007141872A1 - Rotating machine and method of driving the same

Info

Publication number: WO2007141872A1
Application number: PCT/JP2006/311622
Authority: WO
Inventors: Yoshiji Kondo
Original assignee: Elegance Energy Co., Ltd.
Priority date: 2006-06-09
Filing date: 2006-06-09
Publication date: 2007-12-13

Abstract

A rotating machine applied to centrifugal machines, drive systems of automobiles, etc., where energy loss is prevented to effectively use electric energy without waste. Rotating shafts (6A, 6B) of a first stage motor (2A) and a second stage motor (2B), respectively, are connected in a straight line. In the first stage motor (2A), a housing (3A) is fixed, and in the second stage motor (2B), a housing (3B) is free from a fixation. In drive, electricity is conducted to the first stage motor (2A) and the second stage motor (2B) to cause the rotating shafts (6A, 6B) of the motors (2A, 2B) to rotate in the directions opposite from each other. As a result, internal resistance caused by counter electromotive force and occurring in the motors (2A, 2B) is zero.

Description

Specification

Rotating machine and driving method thereof

Technical field

[0001] The present invention relates to a rotating machine and a driving method thereof suitable for application to, for example, a centrifugal separator, an automobile driving system, and the like.

Background art

Conventionally, as a motor of this type of rotating machine, a motor provided with a rotating shaft rotatably supported by a housing via a bearing and a coil attached to the rotating shaft has been widely used. (For example, see Patent Document 1).

Patent Document 1: Japanese Patent Laid-Open No. 11-164496

Disclosure of the invention

Problems to be solved by the invention

[0003] However, this has the following problems.

That is, the positive electrode (positive electrode) and the negative electrode (negative electrode) in the motor are short-circuited to generate heat, and an internal resistance due to the counter electromotive force is generated. Also, internal resistance is generated by the frictional resistance of the bearing. As a result, energy loss occurs and input energy (that is, electric energy) is wasted.

[0005] An object of the present invention is to provide a rotating machine and a driving method thereof that can solve such problems.

Means for solving the problem

[0006] First, the invention of the rotating machine according to claim 1 is a rotating machine in which a first stage motor and a second stage motor are connected to each other, and the first stage motor includes a housing, A rotary shaft rotatably supported by the housing and a coil attached to the rotary shaft. The second-stage motor includes a housing, a rotary shaft rotatably supported by the housing, The first stage motor and the second stage motor are connected in a straight line, and the first stage motor is a housing. The second stage motor has a housing with a fixed state force released. It is characterized by that.

In the rotary machine according to claim 2, in the first-stage or second-stage motor, the rotary shaft is supported by the housing via a bearing.

The invention of the rotating machine according to claim 3 is characterized in that a flywheel is attached to the rotating shaft.

In the rotating machine according to claim 4, the diameter of the coil of the second stage motor is larger than the diameter of the coil of the first stage motor.

The invention of the rotating machine according to claim 5 is characterized in that a third-stage motor is connected to the second-stage motor.

In the invention of the rotating machine according to claim 6, the third stage motor includes a coil integrated with the coil of the first stage motor, and the second stage motor. It is characterized by a nosing connected to the housing.

The rotating machine according to claim 7 is characterized in that the coil of the first stage motor and the coil of the third stage motor are integrated via an intermediate element.

In the rotary machine according to claim 8, the third-stage motor includes a coil having a diameter larger than the diameter of the coil of the first-stage motor. . The invention of the rotating machine according to claim 9 is characterized in that a power interrupting means for interrupting power transmission between the second stage motor and the third stage motor is provided. . The rotating machine according to claim 10 is characterized in that the power interrupting means is a clutch.

The invention of the rotating machine driving method according to claim 11 is the above-described rotating machine driving method, wherein the first stage motor and the second stage motor are energized to rotate the rotating shafts of these motors. Are rotated in opposite directions to each other.

The invention's effect

According to the present invention, since the direction of the current in the second stage motor is opposite to that of the first stage motor, the drive current of the second stage motor can be easily set, so that it is generated in the motor. Internal resistance due to back electromotive force becomes zero. In addition, as with magnetic levitation in the superconducting state, The frictional resistance of the bearing becomes zero. As a result, it is possible to prevent the occurrence of energy loss and to effectively use electric energy without waste.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a cross-sectional view showing a first embodiment of a rotating machine according to the present invention.

As shown in FIG. 1, the rotating machine 1 includes a coaxially opposed two-stage motor structure. That is, the rotating machine 1 has a first stage (lower stage) motor 2A and a second stage (upper stage) motor 2B. The first stage motor 2A includes a cylindrical housing 3A, a cylindrical permanent magnet 5A, a cylindrical rotary shaft 6A, a cylindrical coil 7A, a bearing 8A, and a flywheel 9A. The motor 2B includes a cylindrical housing 3B, a cylindrical permanent magnet 5B, a cylindrical rotary shaft 6B, a cylindrical coil 7B, a bearing 8B, and a flywheel 9B.

Here, the permanent magnet 5 (5A, 5B) is fixed to the inner peripheral surface of the housing 3 (3A, 3B), and the rotary shaft 6 (6A, 6B) is located at the center of the permanent magnet 5. It is supported rotatably. Further, a coil 7 (7A, 7B) is wound around the rotary shaft 6 with a predetermined gap between the coil 7 (7A, 7B). Further, a bearing 8 (8A, 8B) is interposed between the housing 3 and the rotating shaft 6, and a flywheel 9 (9A, 9B) is attached to the rotating shaft 6.

[0012] The first-stage motor 2A and the second-stage motor 2B are connected in a straight line so that the rotating shafts 6A and 6B rotate synchronously, and the diameter ratio of the coils 7A and 7B. Is 1: 1.

[0013] Since the rotating machine 1 has the above-described configuration, when driving the rotating machine 1, the housing 3A of the first-stage motor 2A is fixed and the housing 3B of the second-stage motor 2B is fixed. After releasing the fixed state force, both the motors 2A and 2B are energized to rotate the rotating shafts 6A and 6B in opposite directions.

[0014] Then, in the first stage motor 2A, the rotating shaft 6A rotates forward with respect to the housing 3A, and in the second stage motor 2B, the rotating shaft 6B is synchronized with the rotating shaft 6A. Reverse rotation. As a result, the first stage motor 2A rotates at high speed, and the second stage motor 2B Rotates with the number of revolutions reduced by one minute, that is, 1Z2.

[0015] The internal power generation generated in the first stage motor 2A is easily reversed because the current direction in the second stage motor 2B is opposite to that of the first stage motor 2A. Drive current. Therefore, the internal resistance due to the counter electromotive force generated in the motors 2A and 2B becomes zero. As a result, energy loss can be prevented and electric energy can be used effectively without waste.

[0016] In addition, the frictional resistance of the bearing 8 becomes zero as in the case of magnetic levitation in the superconducting state. As a result, energy loss can be prevented and electric energy can be used efficiently without waste. In addition, since a general-purpose product can be used as the bearing 8, the cost of the bearing 8, and hence the rotating machine 1 can be reduced.

[0017] Further, since the flywheel 9 is attached to the rotary shaft 6, the rotational inertial mass of the flywheel 9 absorbs and releases the rotational energy of the rotary shaft 6 and the coil 7, thereby reducing rotational fluctuation. it can.

[0018] <Second Embodiment>

FIG. 2 is a cross-sectional view showing a second embodiment of the rotating machine according to the present invention.

As shown in FIG. 2, the rotating machine 1 has a structure in which two motor assemblies 11 and 12 are coaxially connected to each other, and a flywheel 9 is provided between the motor assemblies 11 and 12. Is installed. Each motor assembly 11, 12 has first to third stage motors 2A, 2B, 2C.

[0020] That is, the first stage motor 2A includes a cylindrical housing 3A, a cylindrical permanent magnet 5A, a columnar rotating shaft 6A, and a cylindrical coil 7A. Here, a permanent magnet 5A is fixed to the inner peripheral surface of the housing 3A, and a rotary shaft 6A is rotatably supported at the center of the permanent magnet 5A. Further, the coil 7A is wound around the rotating shaft 6A with a predetermined gap between the permanent magnet 5A and the coil 7A.

[0021] Further, a second-stage motor 2B is disposed in the vicinity of the first-stage motor 2A. The second-stage motor 2B includes a cylindrical housing 3B, a cylindrical permanent magnet 5B, and a column. It consists of a rotary shaft 6B and a cylindrical coil 7B. Here, the permanent magnet 5B is fixed to the inner peripheral surface of the housing 3B, and the rotary shaft 6B is rotatably supported at the center of the permanent magnet 5B. ing. Further, the coil is wound around the rotating shaft 6B with a predetermined gap between the coil 7B and the permanent magnet 5B. The first stage motor 2A and the second stage motor 2B are connected in a straight line so that the rotating shafts 6A and 6B rotate synchronously, and the diameter ratio of the coils 7A and 7B is 1: 1

[0022] Further, a third-stage motor 2C is disposed on the outer periphery of the second-stage motor 2B. The third-stage motor 2C includes a cylindrical housing 3C, a cylindrical permanent magnet 5C, and a cylinder. Shaped coil 7 C force is also configured. Here, a permanent magnet 5C is fixed to the inner peripheral surface of the housing 3C, and a coil 7C is provided on the housing 3B of the second-stage motor 2B via a clutch (interlocker) 10 so as to be intermittent. Yes. Therefore, when the housing 3B and the coil 7C are connected, the third stage motor 2C is connected to the second stage motor 2B, and the housing 3B and the coil 7C are connected. At this time, the motor 2C at the third stage is also disconnected from the motor 2B at the second stage. Note that the diameter ratio of the coils 7B and 7C is 1: 4 in the second stage motor 2B and the third stage motor 2C.

[0023] Since the rotating machine 1 has the above-described configuration, the rotating machine 1 is driven to drive a second-stage motor.

When rotating to 2B, disconnect the third stage motor 2C from the second stage motor 2B, and fix the first stage motor 2A housing 3A and the second stage motor 2B housing 3B. After releasing the state force, both the two motors 2A and 2B are energized to rotate the rotating shafts 6A and 6B in opposite directions.

Then, as in the first embodiment described above, in the first stage motor 2A, the rotating shaft 6A rotates forward with respect to the housing 3A, and in the second stage motor 2B, the rotating shaft 6A Synchronously, the rotating shaft 6B rotates in reverse with respect to the housing 3B. As a result, the first-stage motor 2A rotates at a high speed, and the second-stage motor 2B rotates with the number of stages reduced, that is, with the number of revolutions reduced by 1Z2.

[0025] The internal power generation generated in the first stage motor 2A is easily reversed because the current direction in the second stage motor 2B is opposite to that of the first stage motor 2A. Drive current. Therefore, the internal resistance due to the counter electromotive force generated in the motors 2A and 2B becomes zero. As a result, energy loss can be prevented and electric energy can be used effectively without waste. [0026] On the other hand, when the rotating machine 1 is driven to rotate to the third stage motor 2C, the third stage motor 2C is connected to the second stage motor 2B, and the first stage motor 2A After fixing the housing 3A and releasing the fixing force of the housings 3B and 3C of the second and third stage motors 2B and 2C, energize both the two motors 2A and 2B to connect the rotating shafts 6A and 6B. Rotate in opposite directions.

[0027] Then, in the first stage motor 2A, the rotating shaft 6A rotates forward with respect to the housing 3A, and in the second stage motor 2B, the rotating shaft 6B is synchronized with the rotating shaft 6A. Reverse rotation. Further, in the third stage motor 2C, the coil 7C rotates forward in synchronization with the housing 3B of the second stage motor 2B, and the housing 3C rotates forward with respect to the coil 7C. As a result, the first-stage motor 2A rotates at a high speed, the second-stage motor 2B rotates by a fraction of the number of stages, that is, with the number of revolutions reduced by 1Z2, and the third-stage motor 2C Rotates with the number of revolutions reduced by a fraction, that is, 1Z3.

[0028] At this time, the internal power generation generated in the first stage motor 2A is easily reversed in the second stage motor 2B because the current direction is opposite to that of the first stage motor 2A. The drive current of the motor 2B can be used. Therefore, the internal resistance due to the counter electromotive force generated in the motors 2A and 2B becomes zero. As a result, energy loss can be prevented and electric energy can be used effectively without waste.

[0029] In addition, the diameter of the coil 7C of the third stage motor 2C is four times the diameter of the first and second stage motors 2A and 2B, coils 7A and 7B.

[0030] When the rotating machine 1 is applied to a drive system of an automobile, the automobile itself can be used as a generator. That is, when the vehicle requires torque, all three motors 2A, 2B, and 2C are used as drive motors. During cruising, the first-stage motor 2A is driven, and the second-stage motor 2B is generated together with the torque transmission engine to save power. At the time of deceleration, it became easier for the motor 2C in the third stage to participate in power generation. In addition, when power storage is required, the first stage motor 2A is driven, the second stage motor 2B performs torque generation while transmitting torque, and the third stage motor 2C generates power, thereby easily storing power. can do.

[0031] Since the flywheel 9 is attached between the motor assemblies 11, 12, the The rotational inertia mass of the wheel 9 absorbs and releases the rotational energy of the motors 2B and 2C at the second and third stages, thereby reducing rotational fluctuation.

FIG. 3 is a sectional view showing a third embodiment of the rotating machine according to the present invention, FIG. 4 is a sectional view of the rotating machine shown in FIG. 3 taken along line aa, and FIG. 5 is a b--of the rotating machine shown in FIG. It is sectional drawing by b line

As shown in FIG. 3, the rotating machine 1 includes first to third stage motors 2A, 2B, and 2C.

That is, as shown in FIGS. 3 and 5, the first stage motor 2A includes a housing 3A, a plurality of (six in FIG. 5) permanent magnets 5A having a circular arc cross section, and a cylindrical rotation. It consists of a shaft 6A and a cylindrical coil 7A. Here, a plurality of permanent magnets 5A are arranged on the circumference around the rotating shaft 6A, and a coil 7A is installed around these permanent magnets 5A. Each permanent magnet 5A is curved in a direction opposite to the radial direction, as shown in FIG. A plurality of power distribution slip rings 15 are provided around the rotary shaft 6A.

[0035] Further, a second-stage motor 2B is disposed above the first-stage motor 2A, and the second-stage motor 2B has a cylindrical housing as shown in FIGS. 3B, cylindrical permanent magnet 5B, cylindrical rotating shaft 6B, and cylindrical coil 7B force are also configured. Here, a permanent magnet 5B is fixed to the inner peripheral surface of the housing 3B, and a rotating shaft 6B is rotatably supported at the center of the permanent magnet 5B. Further, a coil 7B is wound around the rotary shaft 6B with a predetermined gap between the coil 7B and the permanent magnet 5B. The first stage motor 2A and the second stage motor 2B are connected in a straight line so that the rotary shafts 6A and 6B rotate synchronously, and the diameter ratio of the coils 7A and 7B is 1: 2 A clutch 10 is provided between the rotary shaft 6A of the first stage motor 2A and the rotary shaft 6B of the second stage motor 2B. The coil 7B is a fixed armature.

[0036] Further, a third-stage motor 2C is disposed on the outer periphery of the first-stage motor 2A, and the third-stage motor 2C has a cylindrical housing as shown in FIGS. 3C, cylindrical permanent magnet 5C, and cylindrical coil 7C. Here, a permanent magnet 5C is fixed to the inner peripheral surface of the housing 3C, and a coil 7C is rotatably supported inside the permanent magnet 5C. Note that the first stage motor 2A and the third stage motor 2C are coils 7A, 7 C is united through meson 13. Further, a clutch 10 is provided between the coil 7A of the first stage motor 2A and the coil 7C of the third stage motor 2C. In the second-stage motor 2B and the third-stage motor 2C, the housings 3B and 3C are connected to each other, and the diameter ratio of the coils 7B and 7C is 1: 1. The housings 3B and 3C are output shaft rotors or return mesons.

[0037] Since the rotating machine 1 has the above-described configuration, when the rotating machine 1 is driven, the housing 3A of the first stage motor 2A is fixed and the second and third stage motors 2B, 2C housing 3B, 3C after releasing the fixed state force, energize both motors 2A, 2B to rotate the rotating shafts 6A, 6B in opposite directions.

[0038] Then, in the first stage motor 2A, the rotating shaft 6A rotates forward with respect to the housing 3A, and in the second stage motor 2B, the rotating shaft 6B is synchronized with the rotating shaft 6A. Reverse rotation. As a result, the first-stage motor 2A rotates at a high speed, and the second-stage motor 2B rotates with one-stage number, that is, with the number of rotations reduced by 1Z2.

[0039] Further, the third stage motor 2C has its coil 7C integrated with the coil 7A of the first stage motor 2A, and the housing 3C is connected to the housing 3B of the second stage motor 2B. , Function as a generator. Therefore, the 2nd stage motor 2C power can be extracted and used as electrical energy.

[0040] Then, the internal power generation generated in the first stage motor 2A is easily reversed because the current direction in the second stage motor 2B is opposite to that of the first stage motor 2A. Drive current. Therefore, the internal resistance due to the counter electromotive force generated in the motors 2A and 2B becomes zero. As a result, energy loss can be prevented and electric energy can be used effectively without waste.

[0041] Since the diameters of the coils 7B and 7C of the second and third stage motors 2B and 2C are both twice the diameter of the coil 7A of the first stage motor 2A, the efficiency is 2 Double up.

Further, as shown in FIG. 5, since the plurality of permanent magnets 5A are curved in the direction opposite to the radial direction, the magnetic flux concentrates, so that an intense closed magnetic flux can be obtained. As a result, the centrifugal force breaking strength of the rotor can be increased and the durability during high-speed rotation can be improved. [0043] <Other embodiments>

In the second embodiment described above, the motor assemblies 11 and 12 having a three-stage motor structure have been described. However, the number of motor stages in the motor assemblies 11 and 12 is not limited to three. For example, as shown by a two-dot chain line in FIG. 2, a motor assembly 12 having a four-stage motor structure may be formed by connecting a fourth-stage motor 2D to a third-stage motor 2C.

In the second and third embodiments described above, the case where the mechanical clutch 10 is used as the power interrupting means for interrupting the transmission of power between the two motors 2 and 2 has been described. Other power interrupting means (for example, an electrical control circuit) can be substituted.

Brief Description of Drawings

FIG. 3 is a cross-sectional view showing a third embodiment of the rotating machine according to the present invention.

4 is a cross-sectional view taken along line aa of the rotating machine shown in FIG.

FIG. 5 is a cross-sectional view of the rotating machine shown in FIG. 3 taken along line bb.

Explanation of symbols

[0046] 1 …… Rotating machine

2A …… First stage motor

2B …… Second stage motor

2C …… Third stage motor

2D …… 4th stage motor

3A, 3B, 3C …… Nosing

5A, 5B, 5C …… Permanent magnet

6A, 6B …… Rotation axis

7A, 7B, 7C …… Coil

8A, 8B …… Bearings

9 A ゝ 9B …… Flywheel

10 …… Clutch (power intermittent means) ...... Motor thread and solid meson

Claims

The scope of the claims

[1] A rotating machine in which a first stage motor and a second stage motor are connected to each other,

The first stage motor includes a housing, a rotating shaft rotatably supported by the housing, and a coil attached to the rotating shaft.

The second stage motor includes a housing, a rotation shaft rotatably supported by the housing, and a coil attached to the rotation shaft.

The first stage motor and the second stage motor have their respective rotation shafts connected in a straight line,

The first stage motor has a housing fixed,

In the second stage motor, the housing is released from a fixed state force.

[2] The rotating machine according to [1], wherein in the first-stage or second-stage motor, the rotating shaft is supported by the sleeve and the winging through a bearing.

[3] The rotating machine according to claim 1 or 2, wherein a flywheel is attached to the rotating shaft.

4. The rotating machine according to claim 1, wherein a diameter of the coil of the second stage motor is larger than a diameter of the coil of the first stage motor.

[5] The rotating machine according to any one of claims 1 to 4, wherein a third-stage motor is connected to the second-stage motor.

[6] The third-stage motor includes a coil integrally formed with the coil of the first-stage motor and a housing connected to the housing of the second-stage motor. The rotating machine according to claim 5, wherein:

7. The rotating machine according to claim 6, wherein the coil of the first-stage motor and the coil of the third-stage motor are united via an intermediate element.

[8] The rotation according to any one of claims 5 to 7, wherein the third-stage motor includes a coil having a diameter larger than that of the coil of the first-stage motor. Machine.

9. The power interrupting means for interrupting transmission of power between the second stage motor and the third stage motor is provided. Rotation Machine.

10. The rotating machine according to claim 9, wherein the power interrupting means is a clutch.

[11] A method of driving a rotating machine according to any one of claims 1 to 10,

A method for driving a rotating machine, wherein the first stage motor and the second stage motor are energized to rotate the rotation shafts of these motors in opposite directions.